Which of the Ways Below Is Not a Way in Which

Which of the ways below is not a way in which preference data might be obtained?

A) asking respondents to rate all possible pairs of brands in terms of similarity on a Likert scale
B) asking respondents to make paired comparisons and indicate which brand in a pair they prefer
C) asking respondents to rank brands from the most preferred to the least preferred
D) asking respondents for preference ratings for the various brands